Stone lintels have been used to support roofs since prehistoric times, but cannot bridge large distances. The stone arch came into extensive use in the ancient Roman period and in variant forms could be used to span spaces up to 140 feet (43 m) across. The stone arch or vault, with or without ribs, dominated the roof structures of major architectural works for about 2,000 years, only giving way to iron beams with the Industrial Revolution and the designing of such buildings as Paxton's Crystal Palace, completed 1851.

La Roofing Solutions

Roofing Sheets Ideas

Commercial Roofing Materials

Modern Roofing Materials

Flat Roof Materials

Apr 17, 2019 | Clothilde Laramée

New Roofing Materials

Apr 15, 2019 | Leal Piedalue

Metal Roofing Materials

Apr 06, 2019 | Agnès Lereau

Plexiglas Roofing Sheets

Apr 12, 2019 | Paulette Roussel

Things to Know. You can follow any responses to this Commercial Roof Maintenance Keeping The Over Your Head Roofing Materials Material Manufacturers Types Of Flat Building Metal Epdm through the comment form below. Thank you very much!